Solar flares on December 28, 2001
The most powerful solar flare in 24 hours
X3.4 (very strong) flare - December 28 at 8:45 PM
Solar activity index
Value as of the end of the day on December 28, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 27, 2001 to December 28, 2001
Time zone — UTC+00
List of solar flares for December 28, 2001
The total number of solar flares of class C and higher — 7 flares
C class — 3 | M class — 3 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| X3.4 | 20:02 | 20:45 | 21:32 | — |
| C8.2 | 18:46 | 18:53 | 19:02 | 9751 |
| M1.3 | 12:10 | 12:30 | 12:59 | 9748 |
| M1.0 | 06:47 | 06:55 | 07:06 | 9754 |
| M4.7 | 03:42 | 03:51 | 03:56 | 9742 |
| C4.2 | 02:34 | 02:40 | 03:07 | 9754 |
| C6.5 | 01:23 | 01:27 | 01:32 | — |